Error Handling and Logging

While developing we strongly recommend using logs for errors detection.

Server-side logging

DHTMLX permits to control logging in two ways:

Basic
Detailed

Basic

If any error occurs during the data processing, the client-side data processor object will receive the "error" action containing short info about the problem (full info will be written to the log).

$conn->enable_log("path");

path - an absolute or relative path to the text file where a log will be written.

Detailed

When a critical error occurs all log records for the current session (full error info) will be sent to the client and shown in the browser (useful for debugging, not recommended for production):

$conn->enable_log("path",true);

path - an absolute or relative path to the text file where a log will be written.
The second parameter enables the detailed mode.

Adding custom records to the log

During the development process you may need to write some custom data to the log (can be useful for custom server-side events).

To add a custom text or data to the log file:

Activate logging (basic or detailed).
Call the log() function with your data inside.

$conn->enable_log("temp.log");
LogMaster::log("any text here");